Power installation for the propulsion of marine vessels and for other purposes.



H. A. MAVOR. N POR THB PROPULSION 0F MARINE VESSELS AND FOR OTHER P URPOFS.

POWER INSTALLATIO APPLCATXON FILED JULY l, 1911v Patented Aug. 26` 1913.

5 SHBETSSHEET l.

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PURPOSES.

POWER INSTALLATION FOR THB PROPULSION OP MARINE VESSBLS AND FOB OTHER 1,07 1,070, Patented Aug. 26,1913

5 SHEETBpSHEET 2.

APPLICATION FILED JULY 1, 1911.

l. A. MAVOR.

POWER INSTALLATION POR THE PHOPULSION OF MARINE VESSELS AND FOR OTHER PURPOSES.

APPLICATION FILED JULY 1,1911

1,071 0'70, Patented Augjz, 1913 5 SHEETS-SHEET 3.

www Lwm/ H. A. MAVOR. POWER INSTALLATION FOR THE PROPULSION OF MARNE VESSBLS AND FOR OTHER PURPOSES. APPLIGATIoN 11111311 JULY 1, 1911.

1,07 1 ,070, latented Aug. 26, 1913.

5 SHEETS-SHEET 4.

MOTOR H. A. MAVOR.

POWER INSTALLATION POR THE PROPULSION 0F MARINE VESSBLS AND FOR OTHER PURPOSES.

APPLICATION FILED JULY l, 1911.

5 SHEETS-SHEET 5.

Patented Aug. 26, 1913 UNiTED sTATEs rPATENT oEEroE.

HENRY ALEXANDER MAVOR, OF GLASGOW, SCOTLAND 4 POWER INSTALLATION FOR THE PROPULSION OF MARINE VESSFZS NDl FOR OTHER PURPOSES.

Specification of Letters Patent.

Patented Aug'. 26,1913.

Application tiled July 1, 1911. Serial No. 636,484.

To allie/16m it may concern: f

Be it known that I, HENRY ALEXANDER Mavok, a subject of the King of Great Britain and Ireland, residing at Mile End; in the city and county of (lasgow, Scotland,

have invented Improvements Relating i' Power Installationsl for the Propulsion of Marine Vessels and for other Purposes, of which the following is a specification.

This invention 'relates to that class of power installation for the propulsion of marinevessels or other bodies the speed whereof it is desired should be changed from time to time, which comprises a prime mover system, an electric genera'or system driven thereby and an electric notor system supplied by the generator system.

In many cases if the prime mover system embodies, for example, an internal combustion engine adapted to derive its fuel from a suction gas producer, or a turbine supplied with superheated steam, it is necessary for conomy and convenience to run the engine or turbine continuously notwithstanding that the demand for power may be intermittent.

-The primary object of the present invention is to provide arrangements, embodying a mechanical interconnection between controlling means for the motor system and the regulating switch of an exciter for the generator system, in which all the conductors, switch gear vand electrical elements as aforesaid, are calculated and constructed so as to withstand the maximum currents occurring during say maneuvering operations,the mechanical interconnection serving to introduce a time interval, that is to say, a safety interval wherein the motor controller cannot ordinarily be operated to alter the circuit relationship until the controller associated with the generator system is moved to some definite safe position and vice versa, so that normally the maximum currents cannot be suddenly established, without, how ever, preventing the plant being operated on emergency by other means that are not dependent on the time interval. In this way all the exigencies of practice involving normal and abnormal speed control are met without interfering with the prime mover system.

In the accompanying drawings Figure 1 isa diagrammatic view showing an eleva-- tion of one face of a device according tothe invention used for controlling the power applied to the vessel and an elevation of the motor controller of the plant. Fig. 2 is a sectional face elevation of. the power controlling device and Fig. 3 a part sectional side elevation of the motor controller. Fig. 4 is a diagrammatic view showing an'elevation of the opposite face of the device for' controlling the power applied to the vessel and an elevation of the exciter field regulator of thc electric generator of the plant. Fig. 5 is a sectional side elevation of the power' controlling device and Fig. 6 is a part sectional side elevation of the exciter field regulator. Figs. 7 to l0 inclusive are diagrams illustrating the controller connections in different positions. Fig. 11 is a diagram of a modified arrangement of the plant.

Referring to Fig. 7 of the said drawings, the plant comprises a suction gas producer a using either anthracite or bituminous coal,

an internal combustion engine b, a multifrei quency generator c of a known kind from which current of one of a number of differy ent periodicities can be derived at anyone time or currents of all the periodicities simule taneously, and a motond of multiple type comprising windings that can be used in ividually or collectively to suit speed and power requirements. e is the exciter for the generator. As contemplated in thesaid diagram Fig. 7, the generator comprises a six pole winding f and a four pole winding g while the motor comprises a twelve pole winding h and an eight pole winding z'.

j represents a motor control switch which, as shown in Figs. 1 and 3, comprises a set of brushes 1, 2, 3. 4, 5 and 6 carried by a.

and l2, and stationary contacts 13 to 30,

through angular displacement of a shaft m through a chain wheel n.v

o represents an ordinary rheostatic switch adapted to include resistance in and cut it outl of the exciter circuit in opening and closing the saine. As shown in Figs. 4 and ,6, the shaft p of this switch is moved from on to ofi' position by angular displacement of a chain wheel q. The controller j and switch o are actuated from any part of' the ship by, the chain wheels r and s' respectively of the mechanism shown in Figs. 2

and 5. prov and on positions of The wheel r is a recess a' corresponding the exciter switch.

.15 y, Figs. 2 and 5, is .a

ing always toad ht e handle o is in plunger e enter one of the holes w in it, the cannot be operated of the exciter. If axia movement of plunger z is unresisted by the wheel r,

movement of the handle v will cause one 3l) driven hy ii motor 40, :is described faces of the recess In a the handle u cannot be manipo other of inclined end x; to displace the plunger endwise.

similar way, ulated to alter the the motor without first returning the 'v t e off position to render the ingperative. l

he controller connectlons may be dica speed and full speed ostern half s ing in realityV two thirds 0 `In these diagrams,

hree conductors for the p ase currents to the 12 of the motor;

supply of rents to the eight pole `:vinding z' of motor, 33 the 'gie wheel r is fixed on a .shaft d ith a handle u so that the Wheel l can be'y loved to correspond with the eonvei'i` The n heel .si fixed on a shaft t provided with a handle can be moved to correfornicd willi two whereof are shown in Fig. position of the motor controller j, and the wheel .e with to olf position of stationary housing containing a spriiig-pressed plunger z tend- Vance toward the wheel s.

he arrangement is such that, as .long as f wheel i l of handle o tocomplete the circuit l ed osition as shown th the full spreid. p i 31 represents the group supply of threepole windings i, 32 the group of three conthree phase curgroup of cmductors leading from the four pole windingl y' of the gen ing' g is connected to group 31 of the twelve pole Winding h of the motor, the connections however beingroversed. ln Fig, 10 y' (Full speed ostern), group 34 from the six l pole winding f of the ,generator is connected f to ,Qioiip 3l of the twelve pole Windingr 7L i of the motor, :ind group 3? from the four 1 pole Winding,r f/ ot the ,generator is connected i to group il? of tho .eight Vole winding z' of i the motor. the ifiiiieriioiis lieinf; similar lo i those ot' Filo; 9 tint reversed.

As will appear from Figs. l 'and 3, the Il shaft m is adopted to be connected to the ichain wheel n through a loc ing pin 35 lrnounted upon ii hand wheel 36 keyed to i the said shaft, the arrangement being such l that the :shaft fri, can he operated directly by the hand wheel hy simply unlocking the the position, the latter from the chiiin wheel n. When it is manipulate the motor controller i independently. lii like manner the shaft 71 the rheostiitic switch Shown in Figs. 4 l and 6 may he locked to its chain Wheel o hy a pin 3l and hand wheel 3S for a similar purpose.

Fig. 1l illustrates n modification wherein 'ii'ciiit is controlled by :i switch in iiie specification of Letters Patent No. 944,453 granted to ine, the circuit of'the said motor being arranged to he opened and closed by a the the running. conditions of switch 41 operated as is the switch o of the handle arrangement herein rst described. exciter time interval contemplated according to the varied as required, being,

and half i when the arm 42 of the switch 41 is in on e arm 43 provided wit segments 44 and 45, will have been clockwise by the motor to the position shown where it will have cut out all the resistance 46 from the exciter field circuit and become engaged with segments 47 and 48. When therefore the switch arm 42 is next moved to the o position, is com leied luy way of the se the ments 47 and 50 erator and 34 the grou;` of conductors lead- :in another hrush (not s own) on the ing from the six ole winding,I j' of the genarm 43, thus causing the lutter to be moved erator. Thus, in ig. 7 (Full speed ahead) i untill it leaves the segments 4 7, 48 and engroup 34 from` the six pole winding f o gages segments 44 and 45 in so doin the generator is connected to group 31 of cut the resistfincs into the excl the twelve pole ywinding la of `the motor by What l claim is l t l, way of brus 3, 4 and 5, and group .3.3 In a power installation m the four pole winding g of the gem electric generator system embodying; nep.,- erator is connected to group 32-of the eight rately drivenexciter, and on electric motor le winding of the, motor bv way of system supplied by tho lydem,

so ggushesil, 2 and 6. In Fig, 8 (Half speeii l manually operated mnnl @trolling conahead), group 33 from the four pole windl neetions between th Ind 'motor ing g is connected to group 31 of the twelve Ii systems, mlnusll operated ninna intrek ole winding li. of the motor way of the generator' and rushes 1, 2 and 6. In

il' Fig. 9 alf speed ostern), group from the four pole wind i ling the exciter o t interlocking means www both sommier@ .means 'adapted to prevent `one auch' ineens a brush (not shown) adapted to brid e the y the circuit of the motor heilig operated except when the'other such means occupies some predctermined position in relation thereto.

In an electric power installation of the kind described, the combination with a motor controller Aand an exciter switch, of manually actuated means for operating the motor controller. manually actuated means for controlling the operation of the exciter switch, mechanism associated with both of said means, adapted to introduce a time interval between the actuation ol one such means and the actuation of the other of such means, and devices adapted to permit either controller to bc operated independently on emergency.

8. In aneleetric power installation of the kind described, the combination with a motor controller and an exciter controller, of manually actuated means for operatingthe motor controller, manually actuated means, interlocked with the aforesaid means,

adapted to permit the exciter controller' to be operated after a predetermined time interval and devices adapted to permit either controller to be operated independently on emergency.

4. In an electric power installation of the kind described, the combination with a generator and a power motor of an exciter and a motor driven exciter switch therefor, a controller for the power motor, a controller for the exciter switch motor, meansv for manually operating either controller separately, and interlocking means for prevent ing the operation of one controller exceptI4 when the other controller occupies some predetermined position.

Signed at Glasgow, day of June, 1911.

' HENRY ALEXANDER MAVOR. Witnesses:

THOMAS Rrroum, JAMES PA'roN.

scouund, this 20th 

